Company Filing History:
Years Active: 1997-1999
Title: Innovations by John H. Blakely
Introduction
John H. Blakely is a notable inventor based in Asheville, NC, who has made significant contributions to the field of electrical engineering. With a total of 7 patents to his name, Blakely has focused on developing methods and apparatuses that enhance the efficiency and accuracy of three-phase sensing systems.
Latest Patents
One of his latest patents is titled "Method and apparatus for self-powered three-phase sensing to determine." This invention discloses a method and apparatus for three-phase sensing of a polyphase distribution system, providing true RMS signal monitoring capabilities. Each current transformer is equipped with a rectifier and a separate burden, ensuring accurate signal representation of the true RMS currents in each phase while also supplying DC voltage to self-power the circuit. Two configurations are presented: one using two current transformers to sense all three phases, and another employing a current transformer for each phase. Both configurations allow for the extraction of true RMS signal characteristics while providing a self-powering solution.
Another significant patent is "Method and apparatus for three-phase sensing using two current." This invention outlines a complete three-phase sensing method using two current transformers. In this setup, two phases of a three-phase system serve as the primary windings in each transformer, producing phasor representations of the sum of the two phases. A three-phase sensor is then used to add these phasor representations, generating a third phasor representation. This system can be integrated with conventional overload relay controls to monitor each phase and produce a trip signal when necessary.
Career Highlights
John H. Blakely is currently employed at Eaton Corporation, where he continues to innovate and develop advanced electrical solutions. His work has significantly impacted the efficiency of electrical systems, particularly in the realm of three-phase sensing.
Collaborations
Throughout his career, Blakely has collaborated with notable colleagues, including Mark E. Innes and Robert Tracy Elms. These collaborations have further enriched his work and contributed to the development of innovative technologies.
Conclusion
John H. Blakely's contributions to electrical engineering through his patents and innovations have established him as a prominent figure in the field. His work continues to influence the development of efficient electrical systems, showcasing the importance of innovation in technology.